“Daytime, I think it’s OK. Maybe at the night, it’s too dangerous,” said Felix Ramos, as his 3-year-old son romped in the park playground Friday afternoon.

Four teens were shot on a Libby Lake Park hilltop Wednesday night. A 13-year-old girl and a 15-year-old boy died at the scene of the 8:50 p.m. attack on a slope overlooking the lake. Two boys, both under 18, were hospitalized with gunshot wounds.

Police continue to hunt for the suspects. They fled in a gray pickup.

The shooting occurred at the site of a makeshift memorial for two teens, also a boy and a girl, shot and killed at night at the same site in May 2011.

Libby Lake Park is a slice of a larger area bounded by Douglas Drive, North River Road and Vandegrift Boulevard. And the area has a history of violence, much of it gang-related.

Since 2008, nine of the city’s 30 murder victims were killed in the Police Department’s reporting district that includes the park, including the two on Wednesday.

But compared to five years ago, violent crime in the area has declined. In 2008, 73 violent crimes — murder, rape, robbery and assault — occurred there, compared to 43 incidents last year, a drop of 41 percent, according to the Police Department’s data.

Violent crime throughout Oceanside fell nearly 10 percent during that same time frame.

In recent years, the Douglas-Vandegrift-River Road area “has been relatively quiet,” in terms of crime, police Lt. Aaron Doyle said.

Oceanside Neighborhood Services Director Margery Pierce said that about 10 years ago, the city made a concentrated effort to clean up the Libby Lake Park area, opening a resource center, providing job training, making improvements to the park and bringing in a variety of programs for teens and adults.

“Before, you couldn’t get a pizza delivered in that neighborhood,” Pierce said. “A measure of success was whether or not pizza could be delivered there, and now any company will deliver a pizza in that neighborhood.”

Doyle said it’s difficult to explain the drop of crime in the neighborhood, but he attributed it in part to improved crime analysis and intelligence — and community groups teaming with police.

“There is more of a partnership going on now than ever before,” he said.

Still, some residents steer clear of Libby Lake Park at night. But the teens still come.

The neighborhood was left reeling when Fernando Solano, 16, and Sandra Salgado, 14, were shot to death in a remote spot on a park hillside nearly two years ago. Authorities arrested four people and said the slayings were gang-related. The victims were not gang members.

The teens killed Wednesday — Melanie Virgen, 13, and Edgar Sanchez, 15 — were at the makeshift memorial for the slain teens when at least two assailants attacked them and their friends. They were sitting on a couch that had been dragged up to the area when the gunfire erupted. The couch has since been hauled away by authorities. Police have not determined if the shooting was gang-related.